CN101293340A - Bias assembly for a reversible ratchet tool - Google Patents

Bias assembly for a reversible ratchet tool Download PDF

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Publication number
CN101293340A
CN101293340A CN 200810091975 CN200810091975A CN101293340A CN 101293340 A CN101293340 A CN 101293340A CN 200810091975 CN200810091975 CN 200810091975 CN 200810091975 A CN200810091975 A CN 200810091975A CN 101293340 A CN101293340 A CN 101293340A
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China
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pawl
ratchet
biasing
biasing member
tool
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CN 200810091975
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Chinese (zh)
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CN101293340B (en
Inventor
史蒂文·R·文特
大卫·T·罗斯
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施耐宝公司
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Priority to US11/784,166 priority Critical patent/US7987747B2/en
Priority to US11/784,166 priority
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Publication of CN101293340A publication Critical patent/CN101293340A/en
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Publication of CN101293340B publication Critical patent/CN101293340B/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00Spanners; Wrenches
    • B25B13/46Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
    • B25B13/461Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
    • B25B13/462Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
    • B25B13/463Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis a pawl engaging an externally toothed wheel

Abstract

A bias assembly 12 is provided for a reversible ratchet tool having first and second pawls 16, 18 and a reversing actuator 15 for selecting a drive direction for the ratchet tool by selectively engaging one of the pawls with a ratchet gear 20. The bias assembly comprises a bias member 22 that has a first portion engageable with the first pawl, a second portion engageable with the second pawl, anda third portion engageable with a portion of the ratchet tool. The bias member biases the selectively engaged pawl towards concentric alignment with the ratchet gear. The bias member may be a leaf spring that is generally V-shaped. Preferably, an additional bias member, such as spring 14 is provided, that is engaged with the first and second pawls to separate them.; The bias member prevents non-ratcheting initial rotation of the pawl due to counter-rotation prior to the pawl camming out of engagement with the ratchet gear, thus eliminating wasted motion and maximizing the available angular sweep for the wrench.

Description

棘轮工具的偏压组件 Bias ratchet tool assembly

技术领域 FIELD

本发明涉及棘轮工具的棘爪棘轮组件,特别地,涉及一种减少棘轮工具或扳手的多余动作的偏压组件。 The present invention relates to a ratchet pawl and ratchet assembly tools, in particular, to a wrench or ratchet tool reducing biasing assembly redundant operation.

背景技术 Background technique

当前,已经存在很多利用棘轮的手用工具。 Currently, there is already a lot of use of ratchet hand tool. 基本上,这些工具的运作中,沿第一方向的转动或驱动将啮合内部元件,从而工具将以传统的非棘轮工具的方式运作,以转动工件, 例如螺丝钉或螺栓。 Basically, the operation of these tools, the first direction or rotation of the drive element engaging the inside, so that the tool will be operating in a conventional manner non-ratcheting tool to rotate the workpiece, such as screws or bolts. 当工具沿与第一方向相反的第二方向转动时,内部元件可以彼此滑动, 从而该转动不反向转动工件。 When the tool is rotated in a second direction opposite the first direction, the internal element can slide on each other, so that the reverse rotation of the workpiece is not rotated. 因此,使用者可以在转动或反向转动工具驱动工件时,使工具和工件保持接合。 Thus, the user may upon rotation of the tool drive or reverse rotation of the workpiece, the tool and the workpiece remains engaged. 使用者简单地沿第一方向转动工具,使之转动圆扫描的一部分,从而提供驱动力,然后沿第二方向反向转动工具而不施加驱动力,接着回到第一方向再次施加驱动力。 The user simply rotates the tool along a first direction, so that rotation of part of a circle scanning, thereby providing a driving force, and the reverse rotation tool in a second direction without applying a driving force, and then returned to the first direction, a driving force again.

众所周知,这些棘轮工具允许使用者将工具的工作或驱动端插入狭小空间,并迅速地小角度转动工具。 It is well known, the ratchet tool allows the user to work, or driving end of tool into a narrow space, and small angle rotating tool quickly. 例如,汽车发动机机舱的空间很紧凑。 For example, the cabin space of an automobile engine is very compact. 因此,操作螺栓受到限制,并且拧紧或松开螺栓需要较高的转矩。 Thus, operation of the bolts is restricted, and the tightening or loosening the bolts requires higher torque. 用于拧紧或松开螺栓的扳手可能只能在扳手和发动机机舱上的其他元件接触或干涉之前小角度转动。 Prior to rotation of the pinion angle used for tightening or loosening the bolts may only be in contact with the spanner or wrench interference and other elements of the engine nacelle. 这意味着,必须很多次小角度转动工具。 This means that many times must a small angle rotation tool. 在这些空间中利用传统工具(非棘轮)常常很笨拙和困难,因为这要求小角度转动,随后移开,再重新使工具和螺栓或其他工件接合。 Using conventional tools (non-ratcheting) in these spaces are often awkward and difficult because it requires a small angular rotation, is then removed, and again the tool engagement bolts or other workpiece. 因此,棘轮工具与传统的非棘轮工具相比的好处在于,它保持接合,并明显节省时间和力气。 Therefore, the ratchet tool benefits compared to conventional non-ratcheting tool is that it remains engaged, and significant savings in time and effort.

棘轮工具通常具有棘轮和一个或两个棘爪,其中该棘轮与提供转矩驱动的驱动部分配合或形成一体。 Ratchet tools typically have one or two pawls and a ratchet, wherein the ratchet driving torque of the driving portion provided with or formed integrally. 单个棘爪具有两组棘齿,该两组棘齿交替地与棘轮接合。 Single ratchet pawl has two sets, two sets of ratchet teeth which are alternately engaged with the ratchet wheel. 双棘爪装置(通常称为双棘爪棘轮机构)的棘爪从与棘轮啮合中移进移出,并且其棘齿与棘轮选择性啮合。 Bis detent pawl device (commonly referred to as double pawl ratchet mechanism) move in and out of engagement with the ratchet wheel, and which is selectively engageable with the ratchet teeth of the ratchet.

这些棘轮工具的问题在于, 一旦工具反向转动,棘爪及其棘齿必须重新与棘轮啮合, 来提供转矩驱动力。 These problems ratchet tool is that once the tool reverse rotation, the ratchet pawl and the ratchet must be re-engaged to provide a driving force torque. 通常,棘爪被偏压与棘轮啮合。 Typically, the pawl is biased engagement with the ratchet wheel. 然而,在单棘爪和双棘爪结构中,偏压件单向为棘爪提供偏压力。 However, the single and double pawl ratchet structures, the biasing member provides a biasing force to the one-way pawl. 结果,为了脱离啮合和重新啮合,存在多余旋转运动。 As a result, in order to re-engagement and out of engagement, the presence of unwanted rotational movement. 通常可以说扳手在扳手完全啮合的驱动位置点和棘爪通过单齿滑过棘轮的点之间"表演"。 Generally it can be said driving point and the ratchet spanner wrench fully engaged between the teeth by a single point ratchet slides "performance." 美国专利US6,691,594公开了一种可逆双棘爪棘轮扳手。 U.S. Patent No. US6,691,594 discloses a reversible double pawl ratchet wrench. 当在驱动方向转动时,啮合的棘爪由扳手头和棘轮约束。 When rotated in the driving direction, is restrained by the engagement pawl and the ratchet wrench head. 当逆向转动时,棘爪并不马上脱离啮合使棘爪移到棘轮的相邻齿。 When the reverse rotation, the pawl is disengaged from the pawl is not immediately moved to an adjacent ratchet tooth. 相反,棘爪沿着扳手的内部滑动,直至棘爪到达可以从棘轮径向移开,使棘轮齿和棘爪滑动,更精确地说,使棘轮齿将棘爪从啮合推出。 In contrast, the pawl slides along the interior of the wrench, until the pawl reaches the ratchet wheel can be removed radially from the ratchet teeth and pawl slide, more precisely, the ratchet teeth of the pawl out of the engagement. 在棘爪移动到此位置之前,逆向转动是多余运动。 Before moving to this position of the pawl, the reverse rotational movement is superfluous. 当工具用在提供小量全角度转动的空间中,这种多余运动将很明显。 When the tool is used in providing a space full of small angular rotation, such excess movement will be apparent.

某些棘轮工具的结构可能限制棘爪的转动或棘爪。 Some ratchet tool structure may limit rotation of the pawl or ratchet. 例如,棘爪可以设置有弹簧,该弹簧偏压棘爪,并使之与棘轮啮合,而棘轮的逆向转动沿压縮弹簧的方向推棘爪。 For example, the ratchet may be provided with a spring biased detent, and the engagement with the ratchet wheel, whereas the reverse rotation of the ratchet pawl in a direction to push the compression spring. 棘爪本身向着棘轮头的一个或多个刚性部分,例如沟槽。 Pawl itself towards one or more rigid portion of the ratchet head, such as trenches. 对于这种装置,棘爪可能受沟槽约束或磨损,从而有时工具的运作困难。 With this arrangement, the pawl may be subject to restrictions or wear a trench, which is sometimes difficult to operate the tool.

因此,需要改进棘轮工具的设置和组件。 Accordingly, improved ratchet tool assembly and disposed of.

发明内容 SUMMARY

根据本发明的一方面,提供一种用于可逆棘轮工具的偏压组件,该棘轮工具具有第一棘爪和第二棘爪以及换向器,该换向器通过选择其中一个棘爪与棘轮啮合来选择驱动方向。 According to an aspect of the present invention, there is provided a biasing assembly for a reversible ratcheting tool, the tool having a first ratchet wheel and second pawl and a commutator by selecting one of the ratchet pawl engaging selected driving direction. 偏压组件包括第一偏压件,该第一偏压件具有可以与第一棘爪啮合的第一部分,可以与第二棘爪啮合的第二部分,可以与棘轮工具一部分啮合的第三部分,其中,所述偏压件将所选的棘爪偏压向棘轮,并将选择啮合的棘爪偏压向与棘轮同心排列。 A first biasing member biasing assembly comprises a third portion of the first biasing member having a first portion engageable with the first pawl, the second portion can be engaged with the second pawl may be engaged with the ratchet tool part wherein the biasing member towards the ratchet and pawl bias to the selection and engagement of the ratchet pawl biasing selected concentrically arranged. 该偏压组件还可以包括第二偏压件,该第二偏压件位于第一棘爪和第二棘爪之间,并与第一棘爪和第二棘爪啮合,该第二偏压件提供偏压力将第一棘爪和第二棘爪分开。 The assembly may further comprise a second biasing member biasing the second bias of the second biasing member positioned between the first and second pawl, and engaged with the first and second pawl, member provides a biasing force to separate the first and second pawl. 优选地,第一偏压件为板簧。 Preferably, the first biasing member is a leaf spring.

第一偏压件通常为V形,并且其第三部分为V形的顶点,该顶点通常向着棘轮工具上的v形表面或结构。 The first biasing member is generally V-shaped, and a third part is the apex of the V-shape, the vertex of v-shaped surface or structure generally towards the ratchet tool. 驱动方向的选择导致第一偏压件通过枢轴安装在所述顶点。 Select the drive direction causes the first biasing member is mounted by a pivot at the apex. 第一偏压 The first bias

件还可以包括第一端和第二端,该第一端和第二端可以与棘轮工具的一部分接合,以使第一偏压件安置于棘轮工具上。 It may further include a first end and a second end, the first end and the second end portion engageable with the ratchet tool, so that the first biasing member is disposed on the ratchet tool.

作为选择,第一偏压件可以为弓形。 Alternatively, the first biasing member may be arcuate. 该第一偏压件可以包括第一端和第二端,该第一端和第二端分别包括与第一棘爪和第二棘爪啮合的第一部分和第二部分。 The first biasing member may comprise a first end and a second end, the first and second ends each comprise a first portion and a second portion engaged with the first and second pawl. 该第一偏压件的第一部分和第二部分可以第一棘爪和第二棘爪的结构特征合作,以使第一偏压件安置于棘轮工具上。 The first portion of the first biasing member and the second portion may be a first structural features and second pawl cooperation, so that the first biasing member is disposed on the ratchet tool. 所述第一偏压件可以提供向着第一棘爪和第二棘爪的偏压力,以至少将选择啮合的棘爪沿棘轮径向引导向棘轮。 Said first biasing member may provide a biasing force toward the first and second pawl to engage at least a selected ratchet pawl radially guided to the ratchet wheel.

根据本发明的另一方面,提供了用于可逆棘轮工具的偏压组件,该棘轮工具具有第一棘爪和第二棘爪以及换向器,该换向器通过选择其中一个棘爪与棘轮啮合来选择驱动方向。 According to another aspect of the present invention, there is provided a biasing assembly for reversible ratchet tool, the tool having a first ratchet wheel and second pawl and a commutator by selecting one of the ratchet pawl engaging selected driving direction. 偏压组件包括将第一棘爪偏压向棘轮的第一啮合接触、将第二棘爪偏压向棘轮的第二啮合接触、将第一棘爪和第二棘爪分离的第三啮合接触和第四啮合接触,其中偏压组件将选择啮合的棘爪偏压向与棘轮同心排列。 A first pawl biasing assembly comprises a first bias contact engagement to the ratchet, the second engaging pawl biased toward contact with the second ratchet wheel, the third meshing contact of the first and second pawl separation and fourth meshing contact, wherein the biasing assembly biases the pawl with the ratchet wheel selection engaging concentrically arranged. 在一些实施方式中,第一啮合接触和第二啮合接触形成在第一偏压件,该第一偏压件用于提供压向第一棘爪和第二棘爪的偏压力,从而至少将选择啮合的棘爪沿棘轮的径向方向引向棘轮。 In some embodiments, the first and second meshing contact meshing contact formed on the first biasing member, the first biasing member for providing a biasing force against the first and second pawl, whereby at least select the pawls toward the ratchet wheel in the radial direction of the ratchet wheel. 在一些实施方式中,第三啮合接触和第四啮合接触形成在第二偏压件上,该第二偏压件位于第一棘爪和第二棘爪之间。 In some embodiments, the third and fourth meshing contact meshing contact formed on a second biasing member, the second biasing member positioned between the first and second pawl. 第一偏压件可以是板簧。 The first biasing member may be a leaf spring. 偏压组件可以同时向两个棘爪提供偏压力。 Biasing assembly can also provide a biasing force to the two pawls.

在另一方面,提供了一种可逆双棘爪棘轮扳手,该扳手包括:棘轮头,该棘轮头具有壁,该壁形成空腔,该空腔容纳用于选择棘轮扳手的驱动方向的元件;棘轮,该棘轮至少部分地容纳于所述空腔内,以将转矩传递到工件;第一棘爪和第二棘爪,该第一棘爪和第二棘爪可以选择与所述棘轮啮合,以选择棘轮扳手的驱动方向;偏压组件,该偏压组件与所述第一棘爪和第二棘爪以及棘轮头壁协作,以至少将选择啮合的棘爪偏压向与棘轮同心排列;该偏压组件还与第一棘爪和第二棘爪协作,以将棘爪分离。 In another aspect, there is provided a reversible double pawl ratchet wrench, the wrench comprising: a ratchet head, the ratchet head having a wall forming a cavity receiving element for selecting the driving direction of the ratchet wrench; a ratchet wheel at least partially housed within the cavity so as to transmit torque to the workpiece; a first and second pawl, the first pawl and the second pawl engages with the ratchet may be selected , to select the driving direction of the ratchet wrench; biasing assembly, the biasing assembly of the first and second pawl and ratchet head walls cooperate to select at least pawl biased toward engagement with the ratchet wheel arranged concentrically ; the biasing assembly further, to separate the first and second pawl cooperating detent. 所述偏压组件可以包括第一偏压件和第二偏压件,该第一偏压件为板簧,该板簧将选择啮合的棘爪偏压向与棘轮同心排列,所述第二偏压件将第一棘爪和第二棘爪分离。 The assembly may include a biasing member biasing the first and second biasing member, the first biasing member is a leaf spring to bias the pawl with the ratchet wheel selection engaging concentrically arranged, said second biasing member separating the first and second pawl. 所述第二偏压件可以是巻簧。 The second biasing member may be a spring Volume.

棘轮扳手可以包括用于选择驱动方向的换向器,该换向器可以交替地与棘爪啮合来移动一个棘爪,其中所述第二偏压件与移动后的棘爪协作来移动另一个棘爪。 Ratchet wrench may comprise means for selecting the driving direction of a commutator may be alternately engaged with the pawl to move a pawl, wherein said pawl cooperating the second biasing member to move the moving another pawl.

棘轮扳手可以包括用于选择驱动方向的换向器,该换向器可以交替地与棘爪啮合来移动一个棘爪,使该棘爪与棘轮脱离啮合,偏压组件偏压另一个棘爪,使该另一个棘爪远离所述被移动的棘爪,并与棘轮啮合。 Ratchet wrench may comprise means for selecting the driving direction of a commutator can be moved alternately one pawl engages with the pawl so that the pawl is disengaged from the ratchet, the ratchet biasing assembly biases another, the further away from the ratchet pawl is moved and engages with the ratchet wheel. 偏压组件可以包括第一偏压件,当选择棘爪后,该第一偏压件将每个棘爪偏压向与棘轮同心排列,偏压件相应于驱动方向的选择将在所述空腔内移动。 Biasing assembly can include a first biasing member, when the pawl selected, the first biasing member biasing the pawl toward each arranged concentrically with the ratchet wheel, the driving direction corresponding to the selection of the biasing member to empty mobile cavity. 所述第一偏压件可以提供向着第一棘爪和第二棘爪的偏压力,以至少将选择啮合的棘爪沿棘轮的径向引导向棘轮。 Said first biasing member may provide a biasing force toward the first and second pawl, a radial direction of the ratchet pawl engages at least the selected guided to the ratchet wheel.

在另一方面,提供了棘轮工具的偏压组件,棘轮可以至少与第一棘爪啮合以提供驱动方向的驱动力,以及允许棘爪在与驱动方向相反的滑动方向上相对棘轮滑动,该偏压组件包括第一部分和第二部分,该第一部分可以与棘爪啮合来提供第一方向上的偏压力,所述第二部分可以与棘爪啮合来提供第二方向上的偏压力,其中偏压组件偏压棘爪,使棘爪与棘轮同心排列。 In another aspect, there is provided a biasing assembly of the ratchet tool, the ratchet can be engaged to provide a driving force to the driving direction at least a first pawl, the pawl relative to the ratchet and allow the slide to slide in the direction opposite to the driving direction, the biasing press assembly comprising a first portion and a second portion, the first engagement portion may be provided with the pawl biasing force in a first direction, the second engagement portion may be provided with the pawl biasing force in a second direction, wherein the biasing pressure biasing pawl assembly so that the ratchet pawl concentrically arranged.

如上所述,偏压组件提供向着啮合棘爪的作用力,该作用力减少棘爪和棘轮彼此相对配合或滑动所需的反向转动量。 As described above, the biasing assembly provides a biasing force toward the engagement pawl, the pawl and ratchet biasing force reduces relatively with the required amount of reverse rotation or sliding with each other. 优选地,偏压组件沿棘轮径向向啮合棘爪提供作用力。 Preferably, the assembly provides a biasing force to the ratchet engaging pawl radially. 同样优选偏压组件沿与滑动方向相反的反向偏压啮合的棘爪。 Also preferably the biasing assembly in a direction opposite to the sliding engagement of the ratchet reverse bias. 这使得棘轮工具利用最少元件来移动棘爪和选择驱动方向,并且当由于反向转动而使棘爪已经脱离与棘轮啮合时,允许偏压组件使棘爪沿驱动方向前进。 This makes the ratchet tool with a minimum selection element to move the pawl and the drive direction, and since the reverse rotation when the pawl has been disengaged with the ratchet wheel when engaged, allowing the biasing pawl assembly in the driving direction. 因此,棘轮扳手的动作被最少化,并且棘轮工具的逆向转动具有减少的多余动作。 Thus, the ratchet wrench operation is minimized, and the reverse rotation of the ratchet tool operation with reduced excess.

在一个优选实施方式中,棘轮工具为可逆双棘爪扳手,并具有:偏压组件的第一偏压件,由该第一偏压件分开的一对棘爪,以及棘爪的第二偏压件,该第二偏压件接触并与两个棘爪啮合来提供径向力。 In a preferred embodiment, the tool is a reversible ratchet wrench double pawl, and having: a first biasing member biasing assembly, separated by one pair of the first pawl biasing member, and a second bias pawl pressing member, the second biasing member in contact with the two pawls and to provide the radial force. 所述第二偏压件优选为板簧,从而棘轮扳手的头部内所需的安装空间被减少。 Preferably the second biasing member is a leaf spring, so that the installation space required within a ratchet wrench head is reduced. 第二偏压件的位置优选由棘爪和棘轮特征来保持,从而无需扣件或类似物, 因此减少加工和零件成本。 Position of the second biasing member is preferably retained by a pawl and ratchet features, eliminating the need for fasteners or the like, thus reducing processing and component costs.

在其他实施方式中,棘轮工具可以为非可逆棘轮扳手,其中工具可以在第一方向上与工件连接,以提供第一方向上的驱动,并且工具可以在第二方向上连接,以提供与第一方向相反的驱动。 In other embodiments, the tool may be non-reversible ratchet ratchet wrench, which can be connected to the tool and the workpiece in a first direction to provide a first driving direction, and the tool can be connected to the second direction, to provide a second driving the opposite direction.

附图说明 BRIEF DESCRIPTION

图1为扳手的棘轮头的顶视图,其中去除盖板,展示其内部零件,包括减少扳手多余转动的偏压组件和棘爪组件的第一实施例; FIG. 1 is a top view of a ratchet wrench head, wherein the cover plate is removed to show the internal parts, including a first embodiment of the wrench to reduce the excess rotation of the pawl assembly and the biasing assembly;

图2为类似于图1的现有技术的顶视图,其中第一棘爪处于啮合位置以提供转矩驱动; FIG 2 is a top view of a prior art similar to Figure 1, wherein the first pawl is in the engaged position to provide the driving torque;

图3为图2所示的现有棘轮头的顶视图,其中第一棘爪由于棘轮头的反向转动而开始移动向允许棘爪与棘轮滑动或啮合的位置; FIG 3 is a top view of a conventional ratchet head shown in FIG. 2, wherein the first pawl due to the reverse rotation of the ratchet head starts moving to a position allowing the pawl or the ratchet engaging slide;

图4为偏压组件第二实施例的對以于图1的顶视图。 FIG 4 is a biasing assembly of the second embodiment in a top view in FIG.

具体实施方式参见图1,棘轮扳手的棘轮头10具有主体11和偏压组件12,当扳手转动和反向转动 DETAILED DESCRIPTION Referring to Figure 1, a ratchet wrench having a ratchet body 11 and head 10 biasing assembly 12, when the reverse rotation and rotation of the wrench

时该偏压组件12减少多余转动。 When the biasing assembly 12 is rotated to reduce redundant. 在该实施例中,偏压组件12包括第一弹簧14,在此称为选择弹簧14,以偏压第一棘爪16和第二棘爪18。 In this embodiment, the biasing assembly 12 includes a first spring 14, referred to herein as the select spring 14, to bias the first pawl 16 and second pawl 18. 该第一棘爪16和第二棘爪18可以选择地与棘轮20啮合,从而相应于棘轮头10的转动或逆向转动,选择驱动方向和滑动或啮合方向。 The first pawl 16 and second pawl 18 can selectively engage the ratchet wheel 20, thereby rotating or inversely corresponding rotation of the ratchet head 10, and select the driving direction or the sliding direction of engagement. 选择弹簧14使得换向杆或驱动方向选择器或执行器15作用在棘爪16、 18的柱17上,从而选择器15可以将棘爪16、 18移动,使棘爪与棘轮20啮合或脱离,并且选择弹簧14将棘爪18和16之一转变为相反的形式,即棘爪16和18的另外一个。 Selection of the spring 14 so that the transducer or actuator selector lever or the driving direction 15 acting on the pawl post 16, 18, 17, 15 may be selected so that the pawl 16, 18 moves, the pawl 20 to engage or disengage the ratchet and the select spring 14 and the pawl 18 opposite to the one into the form 16, i.e., the pawl 16 and the other 18. 优选地,选择器15通过钩住柱17将棘爪16和18之一从啮合拉出,例如将图1所示的棘爪18拉出,选择弹簧14偏压棘爪16和18的另一个,例如棘爪16,并使之与棘轮20啮合。 Preferably, the column selector 15 by hook 17 and the pawl 16 engages one of the 18 drawn out from, for example, the pawl 18 is pulled out as shown in FIG. 1, to select another spring 14 biases the pawl 16 and 18 , e.g. pawl 16, and the engagement with the ratchet wheel 20.

当棘轮头10沿驱动方向D转动时,棘爪16与棘轮20啮合,以通过棘轮20提供转矩。 When the ratchet head 10 is rotated in the driving direction D, the pawl 16 engages with the ratchet wheel 20, 20 to provide torque ratchet. 当棘轮头10沿与驱动方向D相反的滑动方佝S转动时,棘爪16从棘轮20径向移出, 从而棘轮20可以相对于棘爪16转动。 10 when the direction opposite to the driving direction of the ratchet head sliding direction D S Koh rotated, the pawl 16 is removed from the ratchet wheel 20 radially, so that the ratchet 20 may rotate relative to the pawl 16. 偏压组件12还可以包括第二弹簧22,在此称为啮合弹簧22,该啮合弹簧22提供相对于棘轮20的径向力。 Biasing assembly 12 may also include a second spring 22, referred to herein as the engaging spring 22, the engaging spring 22 provides a radial force with respect to the ratchet wheel 20. 如图1所示,啮合弹簧22通常为板簧,并具有形成小V形的第一部分22a和第二部分22b。 1, the engaging spring 22 is generally a leaf spring, and formed having a small V-shaped first portion 22a and second portion 22b.

与图2和图3所示的现有技术的没有啮合弹簧22的棘轮头110相比,啮合弹簧22 的作用很突出。 It is not engaged with the prior art shown in FIGS. 2 and 3, the ratchet head 110 as compared with the spring 22, engagement of the spring 22 is protruding. 棘轮头110包括棘轮体111、第一棘爪116、第二棘爪118、和选择弹簧114。 Ratchet head 110 includes a ratchet 111, first pawl 116, second pawl 118, and the selection of the spring 114. 如图1所示,利用选择器使棘爪116和118可以选择与棘轮120啮合。 1, using a selection of engagement pawls 116 and 120 allows the ratchet 118 can be selected. 在图2中, 棘爪116余棘轮120啮合,从而棘轮头110沿驱动方向D的转动通过棘轮120传递转矩给工件。 In Figure 2, the pawl 120 engages the ratchet 116 I, thereby rotating the torque is transferred to the workpiece by the ratchet 120 of the ratchet head 110 of the driving direction D.

图3展示了当棘轮头110沿滑动方向S逆向转动时棘爪16的运动。 Figure 3 shows the ratchet head 110 when the sliding direction S of the pawl 16 reverse rotation movement. 逆向转动导致了棘轮120的齿120推向棘爪116的齿132,迫使棘爪116脱离啮合,从而压縮啮合弹簧114。 120 results in reverse rotation of the ratchet tooth 120 of the pawl 116 into teeth 132, forcing the pawl 116 is disengaged, thereby compressing the spring 114 engages. 换句话说,逆向转动迫使棘爪116部分地与棘轮120—起转动,同时径向向外移动向壁134,其中该壁134形成在各元件所在的空腔136内的棘轮头110上。 In other words, reverse rotation portion 116 to force the ratchet pawl rotates from 120-, while the radially outward movement of the wall 134, the wall 134 which is formed on the ratchet head within the cavity 110 of each element 136 is located.

当逆向转动开始时,棘爪116简单地转动至图3所示的位置。 When reverse rotation begins, the pawl 116 is simply rotated to the position shown in Figure 3. 在棘轮头110的图示实 In the illustrated ratchet head 110

施例中,棘爪116转动,直至尾部"6a与棘轮头的固定结构接触,例如壁138。若此时 Embodiment, the pawl 116 rotates until it tail "6a in contact with the fixed structure of the ratchet head, such as a wall 138. At this time, if

松开棘轮工具,选择弹簧114的偏压力将使棘轮120和棘爪116回到图2所示的位置,虽 Release ratchet tool, select the biasing force of the spring 114 will cause the ratchet wheel 120 and pawl 116 back to the position shown in Figure 2, although

然这样将不会给工件提供转矩驱动。 However, this will not provide driving torque to the workpiece. 需要超过图3所示的逆向转动来使棘爪116的齿132 Need more than 3 shown in FIG reverse rotation of the ratchet teeth 132 to 116

咬合、滑动或啮合在棘轮120的齿130,这是工具所需的动作。 Snap, slide or meshing the teeth 130 of the ratchet 120, which is required for operation of the tool. 图2所示位置和图3所示 Position shown in FIG. 2 and FIG. 3

位置之间的相对转动本质上允许没有咬合或任何转矩驱动;在此称为表演,这是多余动作。 Allowing the relative rotation between a position essentially without any torque or drive nip; referred to herein as performance, this operation is unnecessary. 如图所示,该多余动作可以使13度或更多。 As shown, this action may cause extra 13 degrees or more. 如上所述,对于只允许小角度转动棘轮工具的情况下,这种多余动作相当大。 As described above, the case where only a small angular rotation of the ratchet tool, such extra action considerably.

图1所示的棘轮头10减少或消除了这种多余动作。 FIG ratchet head 110 shown to reduce or eliminate such unwanted operation. 一般地说,棘轮工具需要小量逆向转动来使棘爪越过棘轮。 Generally, a small amount of reverse rotation of the ratchet tool needs to cross the ratchet pawl. 对于有齿的棘爪和有齿的棘轮,所需的逆向转动量为使棘轮的第一齿和相邻第二齿之间的所容纳的棘爪齿移出相邻齿,并移至第二齿和第三齿之间的位置。 For the pawl and the toothed ratchet teeth, the required amount of reverse rotation pawl of the ratchet teeth accommodated between the adjacent first teeth and the second teeth out of the adjacent teeth, and to a second a position between the teeth and the third tooth. 在减少表演的理想设置中,棘爪齿越过单个棘轮齿所需的逆向转动为一个齿的角长度。 Reduction performance over the settings, the pawl teeth ratchet over the individual teeth required for the reverse rotation angle of one tooth length. 在这种结构中,当逆向转动时,棘爪将从棘轮径向移出,并且只径向移出。 In this structure, when the reverse rotation, the ratchet pawl radially out from, and only radially out.

虽然这将减少表演,但这种设置对于棘轮工具组件整体的运作并不理想。 While this will reduce performance, but this setting is not ideal for the overall operation of the ratchet tool components. 如图1所示, As shown in Figure 1,

通常驱动转动将使啮合棘爪16压向壁34,或者更具体地说,将棘爪16压缩在壁34和棘轮20之间。 It will typically driven to rotate the engaging pawl 16 against the wall 34, or more specifically, the pawl 16 will be compressed between the wall 34 and the ratchet gear 20. 这使得向工具施加的转矩增加将增加压力,从而增加棘爪16齿和棘轮20齿之间的紧握。 This enables the torque applied to the tool will increase the pressure increases, thereby increasing the grip between the pawl 16 and the ratchet teeth 20 teeth. 为了减少表演,壁34不得不去除,使棘爪只径向移动。 To reduce performance, wall 34 has to be removed, the pawl moves only radially. 虽然现有技术己经尝试了使棘爪只径向移动的结构,这需要棘爪滑动的导向槽。 While the prior art has attempted the pawl only radially movable structure, which requires the pawl slide guide groove. 这导致过度磨损,并导致棘爪和壁的约束,足以毁掉工具本身。 This leads to excessive wear and lead to constraints pawl and walls, enough to ruin the tool itself. 同时,还需要同时移动棘爪的选择器,需要大的棘轮头。 Meanwhile, also we need to move the selector pawl, a large ratchet head.

棘轮10的双棘爪机构减少了逆向运动的表演,并利用了上述的壁34。 Double pawl ratchet mechanism 10 reduces the reverse movement of the performer, and the use of the wall 34 described above. 通过采用啮合弹簧22和选择弹簧14,棘爪16被保持在相对棘轮的一定方向,从而棘爪齿32的弧形保持与棘轮20和棘轮齿30的弧形同心,防止图3所描述的初始棘爪转动。 22 and the select spring 14, the pawl 16 is held by using the spring engages the ratchet wheel in a certain direction opposite to the arcuate pawl tooth 32 is maintained with the ratchet wheel 20 and the ratchet teeth 30 of arcuate concentrically, as described in FIG. 3 to prevent initial pawl rotates. 在逆向转动期间, 棘轮齿30使棘爪16脱离啮合,选择弹簧14和啮合弹簧22被初始压縮。 During reverse rotation, the ratchet teeth 30 is disengaged from the pawl 16, the select spring 14 and the engaging spring 22 is initially compressed. 一旦棘爪齿32 完全脱离与棘轮齿30啮合,选择弹簧14伸展,推动棘爪16,使棘爪16沿与逆向转动棘轮20相对方向移动。 Once the pawl tooth 32 is fully disengaged from the ratchet teeth 30, to select the spring 14 extends, pushing the pawl 16, the pawl 16 is rotated along the reverse direction relative to the ratchet 20 moves. 啮合弹簧22通过将尾部16a偏压向棘轮20,防止图3所示的棘爪转动。 Engagement by spring 22 biases the tail portion 16a of the ratchet 20 to prevent rotation of the pawl shown in FIG. 因此,棘爪16上的主要齿32将更容易地从相邻的棘轮齿30a、 30b推离。 Thus, the main teeth on the pawl 16 32 more readily from the adjacent ratchet teeth 30a, 30b push away. 因此, 偏压组件12包括啮合弹簧22和选择弹簧14,在逆向转动期间减少棘轮头10的表演。 Thus, the biasing assembly 12 includes an engagement spring 22 and the select spring 14, the ratchet head 10 to reduce the performance during reverse rotation.

如上所述,图1展示了板簧形式的啮合弹簧22,该板簧具有形成V形的第一部分22a 和第二部分22b,顶点22c处于两者之间。 As described above, FIG. 1 shows in the form of a leaf spring engaging a spring 22, which is formed having a V-shaped leaf spring 22a and the second portion of the first portion 22b, the apex 22c in between. 虽然棘轮头10与棘爪16啮合,棘轮头10为可逆的,从而在选择第二棘爪18和棘轮啮合的情况下,驱动方向D和滑动方向S可以颠倒。 While the engaging head 10 and the ratchet pawl 16, a case where the ratchet head 10 is reversible, so that the selection and engagement of the second ratchet pawl 18, the driving direction of the sliding direction D and S may be reversed. 第一部分22a接触并可以与第一棘爪16啮合,同时第二部分22b接触并可以与第二棘爪18啮合,从而啮合弹簧22将选择的棘爪16、 18偏压至如上所述相对于棘轮20所需的方向。 The first portion 22a may be in contact and engaged with the first pawl 16 while the second portion 22b and the contact 18 may be engaged with the second pawl, the engaging pawl spring 22 so that the selected 16, 18 as described above with respect to bias the ratchet wheel 20 in a desired direction. 在图1中,棘爪18从棘轮20缩回,从而压向第二部分22b,该第二部分22b 压向壁38。 In Figure 1, the pawl 18 is retracted from the ratchet wheel 20, thereby pressing the second portion 22b, 22b of the second portion 38 is pressed against the wall. 第二棘爪18向着壁38的运动向着顶点22c摆动或转动啮合弹簧22,从而第一部分22a受压而远离壁38,因此增加对第一棘爪16的偏压力。 The second pawl 18 toward the moveable wall 38 towards the apex 22c of the engaging spring 22 is rotated or swung, so that the first pressure-receiving portion 22a away from wall 38, thus increasing the biasing force of the first pawl 16. 优选地,壁38也可以稍微为V形或弓形,从而存在壁顶点38a,啮合弹簧22c通常容纳和位于该壁顶点38a。 Preferably, the wall 38 may be slightly V-shaped or arcuate wall so that there is a vertex 38a, 22c typically houses the spring and engaging the wall located apex 38a. 啮合弹簧22的板簧结构通过减少棘轮头空腔36内所需的空间来减少安装空间,以容纳啮合弹簧22和其他元件。 A leaf spring engaging spring structure 22 by reducing the space required for the ratchet head within the cavity 36 to reduce the installation space to accommodate the engagement member 22 and the other spring. 该结构进一步允许采用单个啮合弹簧22,并允许啮合弹簧22使用时只需选择器或换向杆15作用在棘爪16和18之一。 This structure further allows the use of a single engagement spring 22, and allow the spring 22 engages only the use of a selector or reversing lever 15 acting on the pawl 16 and one of 18.

需注意的是,图1所示的啮合弹黉22还包括远离棘爪16、 18的弯曲和成角度的末端22d。 It should be noted that the elastic engagement hon shown in Figure 1 further comprises an end 22 bent away from the pawl 16, 18 and the angled 22d. 啮合弹簧22的尺寸使得这些末端22d根据所选棘爪16、 18,钩在棘轮头10的内部,例如边缘23。 Size of the engaging spring 22 such that the pawl 16 according to the selected terminal 22d, 18, the hook 10 of the ratchet head in the interior, such as an edge 23. 啮合弹簧22由末端22d保持,从而啮合弹簧22保持在适当的位置, 并且在棘轮头10内不滑动,通过壁顶点38a和啮合弹簧顶点22c的协作进一步增强了功能。 22d is held by the spring engaging end 22 in order to engage the spring 22 is held in place and does not slide within the ratchet head 10, the functionality is further enhanced by cooperation of the spring engaging wall 38a and the apex of the apex 22c.

图4展示了棘轮头210内的啮合弹簧222的第二实施例。 Figure 4 shows a second embodiment of the spring engaging head 210 ratchet 222. 棘轮头210和啮合弹簧222 基本上与图1所示的棘轮头10和啮合弹簧22的工作方式一样。 Ratchet head 210 and the spring 222 substantially engaging the ratchet head 10 shown in FIG. 1 and the spring 22 work as the engagement. 啮合弹簧222为弓形板簧, 并且中心部分222c通常邻接壁238,第一端222a对着第一棘爪216,第二端222b对着第二棘爪218。 Engaging the arcuate spring 222 is a leaf spring, and the central portion of the abutment wall 222c generally 238, a first end 222a against the first pawl 216, second pawl 218 against the second end 222b. 与啮合弹簧22相比,该啮合弹簧222去除了弓形端22b,取而代之,采用了形成在每个棘爪216、 218上的结构特征,例如短钩240,来保持啮合弹簧222在棘爪头210内的位置。 Compared with the engaging spring 22, the engaging spring 222 in addition to the arcuate end 22b, instead, use a 216, 218 formed on the structural features of each detent, such as a short hook 240, the spring 222 is held in engagement pawl head 210 location within. 对于棘爪头10,棘爪16、 18的啮合和縮回导致棘爪16、 18沿啮合弹簧22滑动,而对于棘爪头210,啮合弹簧222 —定程度上与棘爪216、 218—起移动, 并沿着壁238滑动,且一定程度上也相对于棘爪216、 218移动。 For the first pawl 10, the pawl 16, the engagement pawl 18 and retraction of the leads 16, 18 slide along the engaging spring 22, the pawl head 210 for engaging the spring 222-- extent on the pawl 216 from 218- move, and slides along the wall 238, and to some extent also with respect to the pawls 216, 218 move. 换句话说,当棘爪216 脱离与棘轮220啮合时,第一啮合弹簧末端222a沿着棘爪216滑动,直至短钩240与之接触。 In other words, when the pawl 216 out of engagement with the ratchet wheel 220, a first spring end 222a engaging pawl 216 slides along, the hook 240 until the short contact therewith. 然后,随着第一棘爪216的继续移动,啮合弹簧222沿着壁238滑动。 Then, with continued movement of the first pawl 216, the engaging spring 222 slides along the wall 238. 在这两个阶段或两个阶段之一中,啮合弹簧222也可以相对壁238摆动或转动。 In one of these two stages or two stages, the spring 222 engages the opposite wall 238 may tilt or rotate.

啮合弹簧22也可以采用其他可能的形式或结构,也可以用一对啮合弹簧22。 The engaging spring 22 may be employed other possible form or structure, may be engaged by a pair of springs 22. 此外, 必须注意虽然优选实施例减少了安装空间和加工步骤,但是啮合弹簧也可以用较大的弹簧或巻簧,啮合弹簧可以直接固定在棘爪和/或棘轮头的固定结构,例如壁38。 Moreover, it must be noted that while the preferred embodiment reduces the installation space and processing steps, but the engagement spring can also be used or large spring Volume spring, the spring may be directly fixed to the engaging pawl and / or ratchet head of the fixed structure, such as a wall 38 . 同样,必须注意提供两个方向偏压的偏压组件12可以由单个偏压件形成。 Also, care must be taken to provide a biasing assembly 12 may be biased in both directions formed from a single biasing member.

此外,以上所述的偏压组件的运作可以用于非可逆扳手。 Further, the above-described operation of the biasing assembly may be used for non-reversible wrenches. 本质上,非可逆扳手在第一 Essentially, the first non-reciprocal wrench

方向上可以与工件接合,以相对于工件产生第一转动方向上的驱动,并且在第二方向上可 May be engaged with the workpiece in a direction with respect to the workpiece in the direction of the first rotation drive, and may be in the second direction

以与工件接合,以相对于工件产生与第一转动方向相反的第二方向的驱动。 To engage the workpiece with respect to the workpiece rotation drive and a second direction opposite the first direction. 通常,该装置 Typically, the apparatus

具有类似于棘轮20的棘轮,虽然通常用于啮合工件的两面上具有凹陷或镜像结构。 A ratchet having ratchet 20 is similar to, although both surfaces of the workpieces generally have a recess for engaging or mirror structure. 当相对于扳手本身时,头部允许沿一个旋转方向驱动,并且沿另一个旋转方向驱动。 When the wrench relative to itself, allowing the head driving one rotational direction, and is driven in the other direction of rotation. 因此,该扳手通常具有单棘爪。 Thus, the ratchet wrench has a single generally. 然而,现有技术的这类型扳手同样也在单方向上偏压棘爪。 However, this type of prior art wrenches are unilaterally biased detent same direction.

根据本发明的一方面,提供一种偏压组件,该偏压组件对单棘爪提供两个方向的偏压力,如同用于非可逆棘轮工具。 According to an aspect of the present invention, there is provided a biasing assembly, the assembly provides a biasing force biasing the single pawl in both directions, for non-reversible ratchet tool like. 换句话说,如图1所示的棘轮头10可以改进,省略第二 In other words, the ratchet head 10 as shown in FIG. 1 can be improved, second omitted

棘爪18,选择弹簧14和啮合弹簧22将第一棘爪16偏压向与棘轮20啮合的位置。 Pawls 18, 14 and 22 to select the position of the first pawl spring 16 engages the spring biased toward engagement with the ratchet wheel 20. 在沿滑动方向S的逆向转动时,导致表演或多余动作的偏压组件12 (在本实施例中包括选择弹簧14盒啮合弹簧22)的运作、棘爪16的转动将被减少或消除。 When the reverse rotation of the sliding direction S, performance or cause unnecessary operation of biasing assembly 12 operation (embodiment includes selecting a spring 14 engages a spring box 22 in the present embodiment), rotation of the pawl 16 will be reduced or eliminated.

以上是本发明的具体实施方式,并不构成对本发明保护范围的限定。 These are the embodiments of the present invention, not to limit the scope of the present invention. 任何在本发明的精神和原则之内所作的修改、等同替换和改进等,均应包含在本发明权利要求的保护范围之内。 Any modifications within the spirit and principle of the present invention, equivalent substitutions and improvements should be included within the scope of the claims of the invention.

Claims (23)

1. 一种用于可逆棘轮工具的偏压组件,该棘轮工具具有第一棘爪和第二棘爪以及换向器,该换向器通过选择其中一个棘爪与棘轮啮合来选择驱动方向,所述偏压组件包括:偏压件,该偏压件具有可以与第一棘爪啮合的第一部分,可以与第二棘爪啮合的第二部分,可以与棘轮工具的一部分啮合的第三部分;其中,所述偏压件将所选的棘爪偏压向棘轮,并使所选的棘爪与棘轮同心排列。 A biasing assembly for a reversible ratcheting tool, the tool having a first ratchet wheel and second pawl and a commutator by selecting one of the engaging pawl with the ratchet wheel to select the driving direction, the biasing assembly comprising: a biasing member, the biasing member having a first portion engageable with the first pawl, the second portion can be engaged with the second pawl, ratchet tool can engage with a portion of the third portion ; wherein said biasing member towards the ratchet wheel, the ratchet and pawl selected concentrically arranged selected pawl bias.
2. 根据权利要求1所述的偏压组件,其特征在于:还包括另一个偏压件,该偏压件位于第一棘爪和第二棘爪之间,并与第一棘爪和第二棘爪啮合,该第二偏压件提供偏压力将第一棘爪和第二棘爪分开。 The biasing assembly according to claim 1, characterized in that: further comprising a further biasing member, the biasing member positioned between the first and second pawl, and the first and second pawl two pawls, the second biasing member provides a biasing force to separate the first and second pawl.
3. 根据权利要求1所述的偏压组件,其特征在于:所述偏压件为板簧。 3. A biasing assembly according to claim 1, wherein: said biasing member is a leaf spring.
4. 根据权利要求1所述的偏压组件,其特征在于:所述偏压件为V形,该偏压件的第三部分为V形的顶点,该顶点通常向着棘轮工具上的V形表面或结构。 4. A biasing assembly as claimed in claim 1, wherein: said biasing member is a V-shaped, a third portion of the biasing member into the apex of the V-shape, the vertex toward the upper ratchet tool generally V-shaped surface or structure.
5. 根据权利要求4所述的偏压组件,其特征在于:所述偏压件通过枢轴安装在所述顶点, 以适应由于驱动方向的选择导致的棘爪移动。 Biasing assembly according to claim 4, wherein: said biasing member is mounted in the apex by a pivot to accommodate the pawl moved by the selected driving direction caused.
6. 根据权利要求1所述的偏压组件,其特征在于:所述偏压件还可以包括第一端和第二端, 该第一端和第二端可以与棘轮工具的一部分接合,以将第一偏压件安置在棘轮工具上。 6. A biasing assembly according to claim 1, wherein: said biasing member may further include a first and second ends, the first end and the second end may be engaged with the ratchet portion of the tool, in order to the first biasing member is disposed on the ratchet tool.
7. 根据权利要求1所述的偏压组件,其特征在于:所述偏压件为弓形。 7. A biasing assembly according to claim 1, wherein: said biasing member is arcuate.
8. 根据权利要求7所述的偏压组件,其特征在于:所述偏压件包括第一端和第二端,该第一端和第二端分别包括与第一棘爪和第二棘爪啮合的第一部分和第二部分。 8. A biasing assembly according to claim 7, wherein: said biasing member comprises a first end and a second end, the first and second ends, respectively comprise first and second ratchet pawl the first and second portions of the engagement pawls.
9. 根据权利要求7所述的偏压组件,其特征在于:所述偏压件的第一部分和第二部分可以与第一棘爪和第二棘爪的结构特征协作,以将第一偏压件安置在棘轮工具上。 9. A biasing assembly according to claim 7, wherein: said first and second portions of the biasing member may cooperate with the structural features of the first and second pawl, to a first bias pressers placed on the ratchet tool.
10. 根据权利要求1所述的偏压组件,其特征在于:所述偏压件提供向着第一棘爪和第二棘爪的偏压力,以至少将选择啮合的棘爪沿棘轮径向引导向棘轮。 10. A biasing assembly according to claim 1, wherein: said biasing member to provide a biasing force toward the first and second pawl, the pawl will select at least along a radial guide ratcheting the ratchet.
11. 一种用于可逆棘轮工具的偏压组件,该棘轮工具具有第一棘爪和第二棘爪以及换向器, 该换向器通过选择其中一个棘爪与棘轮啮合来选择驱动方向,所述偏压组件包括:将第一棘爪偏压向棘轮的第一啮合接触,将第二棘爪偏压向棘轮的第二啮合接触,将第一棘爪和第二棘爪分离的第三啮合接触和第四啮合接触;其中,所述偏压组件将选择啮合的棘爪偏压向与棘轮同心排列。 11. A biasing assembly for a reversible ratcheting tool, the tool having a first ratchet wheel and second pawl and a commutator by selecting one of the engaging pawl with the ratchet wheel to select the driving direction, the biasing assembly comprises: a first engagement pawl biased toward contact with the first ratchet, the second engaging pawl biased toward contact with the second ratchet wheel, the first and second pawl separation of three and fourth meshing contact meshing contact; wherein the biasing assembly biases the pawl to select engages with the ratchet wheel arranged concentrically.
12. 根据权利要求11所述的偏压组件,其特征在于:所述第一啮合接触和第二啮合接触形成在偏压件上,该偏压件提供压向第一棘爪和第二棘爪的偏压力,以至少将选择啮合的棘爪沿棘轮的径向方向引导向棘轮。 12. A biasing assembly according to claim 11, wherein: said first and second meshing contact meshing contact formed on the biasing member, the biasing member provides a second pressure to the first pawl and ratchet pawl biasing force to at least a selection of engagement in the radial direction along the ratchet pawl to the ratchet guide.
13. 根据权利要求12所述的偏压组件,其特征在于:所述第三啮合接触和第四啮合接触形成在另一个偏压件上,该另一个偏压件位于第一棘爪和第二棘爪之间。 13. A biasing assembly according to claim 12, wherein: said third and fourth meshing contact meshing contact formed on the other of the biasing member, the biasing member is located in the other of the first and second pawl between the two pawl.
14. 根据权利要求12所述的偏压组件,其特征在于:所述偏压件为板簧。 14. A biasing assembly according to claim 12, wherein: said biasing member is a leaf spring.
15. 根据权利要求11所述的偏压组件,其特征在于:所述偏压组件同时向两个棘爪提供偏压力。 15. A biasing assembly according to claim 11, wherein: said biasing assembly also provides a biasing force to the two pawls.
16. —种可逆双棘爪棘轮扳手,该扳手包括:棘轮头,该棘轮头具有壁,该壁形成空腔, 该空腔容纳用于选择棘轮扳手的驱动方向的元件;棘轮,该棘轮至少部分地容纳于所述空腔内,以将转矩传递到工件;第一棘爪和第二棘爪,该第一棘爪和第二棘爪可以选择与所述棘轮啮合,以选择棘轮扳手的驱动方向;偏压组件,该偏压组件与所述第一棘爪和第二棘爪以及棘轮头壁协作,以至少将选择啮合的棘爪偏压向与棘轮同心排列;该偏压组件还与第一棘爪和第二棘爪协作,以将棘爪分离。 16. - bis kind of reversible pawl ratchet wrench, the wrench comprising: a ratchet head, the ratchet head having a wall forming a cavity for receiving the drive member to select the direction of the ratchet wrench; ratchet wheel at least partially housed in said cavity so as to transmit torque to the workpiece; a first and second pawl, the first pawl and the second pawl engages the ratchet may be selected, to select a ratchet wrench a driving direction; a biasing assembly, the biasing assembly of the first and second pawl and ratchet head walls cooperate to bias the pawl with the ratchet wheel to the selected at least meshed concentrically arranged; the biasing assembly also, to separate the first and second pawl cooperating detent.
17. 根据权利要求16所述的棘轮扳手,其特征在于:所述偏压组件还包括第一偏压件和第二偏压件,该第一偏压件为板簧,该板簧将选择啮合的棘爪偏压向与棘轮同心排列,所述第二偏压件将第一棘爪和第二棘爪4^离。 17. The ratchet wrench according to claim 16, wherein: said biasing assembly further comprises a first biasing member and a second biasing member, the first biasing member is a leaf spring will be selected pawl biased toward engagement with the ratchet wheel arranged concentrically, said second biasing member first and second pawl from 4 ^.
18. 根据权利要求17所述的棘轮扳手,其特征在于:所述第二偏压件为巻簧。 18. The ratchet wrench according to claim 17, wherein: said second biasing member is a spring Volume.
19. 根据权利要求17所述的棘轮扳手,其特征在于:还包括用于选择驱动方向的换向器, 该换向器可以交替地与棘爪啮合来移动一个棘爪,其中所述第二偏压件与移动后的棘爪协作来移动另一个棘爪。 19. The ratchet wrench according to claim 17, characterized in that: further comprising a commutator for selecting the driving direction, the diverter may be alternately engaged with the pawl to move a pawl, wherein said second cooperating with the pawl biasing member after the movement to move the other pawl.
20. 根据权利要求16所述的棘轮扳手,其特征在于:还包括用于选择驱动方向的换向器,该换向器可以交替地与棘爪啮合来使一个棘爪脱离与所述棘轮啮合,所述偏压组件偏压另一个棘爪,使该另一个棘爪远离所述被移动的棘爪,并与棘轮啮合。 20. The ratchet wrench according to claim 16, characterized in that: further comprising a commutator for selecting the driving direction, the diverter may be alternately engaged with the pawl to make an engagement pawl disengaged from the ratchet the biasing assembly biases the detent to another, so that the other pawl is moved away from the pawl and engaged with the ratchet wheel.
21. 根据权利要求20所述的棘轮扳手,其特征在于:所述偏压组件包括偏压件,当选择棘爪后,该偏压件将每个被选择的棘爪偏压向与棘轮同心排列,所述偏压件将在所述空腔内移动以适应对驱动方向的选择。 21. The ratchet wrench according to claim 20, wherein: said biasing assembly comprises a biasing member, when the select pawl, the biasing member biasing each of the pawl with the ratchet wheel to the selected concentrically arrangement, said biasing member in said cavity to be moved to accommodate the selection of the driving direction.
22. 根据权利要求21所述的棘轮扳手,其特征在于:所述偏压件提供向着第一棘爪和第二棘爪的偏压力,以至少将选择啮合的棘爪沿棘轮的径向引导向棘轮。 22. The ratchet wrench according to claim 21, wherein: said biasing member to provide a biasing force toward the first and second pawl to at least the selected radial pawl engaging the ratchet wheel along the guide the ratchet.
23. —种棘轮工具的偏压组件,该棘轮可以至少与一个棘爪啮合以提供驱动方向的驱动力,并且该棘轮允许棘爪在与驱动方向相反的滑动方向上相对棘轮滑动,该偏压组件包括-第一部分和第二部分,所述第一部分可以与棘爪啮合来提供第一方向上的偏压力,所述第二部分可以与棘爪啮合来提供第二方向上的偏压力,其中偏压组件偏压棘爪,使棘爪与棘轮同心排列。 23. - biasing species ratchet tool assembly, the ratchet may provide a driving force to the driving direction of the at least one engaging pawl and the ratchet pawl to allow relative sliding in the sliding direction of the ratchet wheel opposite to the driving direction, the bias assembly comprising - a first portion and a second portion, the first engagement portion may be provided with the pawl biasing force in a first direction, the second engagement portion may be provided with the pawl biasing force in a second direction, wherein the biasing assembly biases the pawl, the pawl and the ratchet concentrically arranged.
CN 200810091975 2007-04-05 2008-04-07 Bias assembly for a reversible ratchet tool CN101293340B (en)

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US20080245194A1 (en) 2008-10-09
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GB2486829A (en) 2012-06-27
CN101293340B (en) 2013-05-08

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